Just because Shon Coleman took many of the snaps at left tackle in spring practices, don't assume he'll be the replacement for Browns legend Joe Thomas.

I was among a small group of media people talking to offensive line coach Bob Wylie last week. He is one of the few offensive assistants to survive the post-season purge by head coach Hue Jackson.

Listening to Wylie, it's clear he isn't sold on any of the candidates. Neither is the front office. You can tell as they added another name to the list by signing Greg Robinson.

"Coleman is leading the charge (at left tackle)," said Wylie. "But we have a lot of bodies."

Indeed they do. Offensive coordinator Todd Haley praised Coleman, but also said the Browns have "a Plan B, a Plan C and potentially a Plan D we don't even know about."

Haley's press conference was before the Browns signed Robinson. Or maybe he meant Donald Stephenson, a free agent signed by the Browns who was suspended for the first two games of the season after flunking a drug test.

Not sure about Stephenson. He wasn't with the Browns for any spring drills. Stephenson has 37 starts in six years, but never could hold a starting job.

THE DRAFT PICKS

1. Coleman was a third-round pick in 2016. He missed most of the season while recovering from knee surgery. He was a bruising left tackle at Auburn. He started all 16 games at right tackle last season. According to Profootball focus, Coleman allowed six sacks. He was flagged for 14 penalties, second most among any offensive linemen.

2. Wylie mentioned his line had the "third least" penalties in the NFL. He discussed how Coleman was "a little late" moving on the snap count. He explained the Browns tried to help him "by getting a jump, but he got carried away with it ... and all the false starts started coming." Wylie admitted the Browns have may "over-coached" Coleman.

3. Wylie explained it wasn't easy for Coleman to go from left tackle in college to right tackle last year and back to left tackle this spring: "It's a big change. It's like being a right-handed golfer, then swinging left-handed. It doesn't happen overnight."

4. The Browns used Joel Bitonio for a few snaps at left tackle. It would be a shock if he moved from his left guard spot. Wylie explained: "He is an elite guard, one of the top 4-5 in the league. You put him at tackle and he becomes ... what ... just a tackle."

5. Free agent acquisition Chris Hubbard also took a few snaps on the left side. He played right tackle for Pittsburgh and is expected to start there this season.

6. The Browns drafted Austin Corbett in the second round. He started at left tackle for four years at Nevada. He played some snaps there this spring, but also played some guard.

7. Wylie on Corbett: "He has missed very few assignments. ... What is his best spot? Where does he feel the best? He played left tackle in high school and college. We have played him at left tackle, left guard and right tackle. He's good. He just goes and does it."

8. The best case for the Browns would be Corbett or Coleman growing into the job. But it's way too soon to know. As Wylie said several times: "We haven't put the pads on yet." That's when the real blocking and tackling begins in summer training camp.

THE LONG SHOT

1. Desmond Harrison is 24 and signed with the Browns as an undrafted free agent out of Div. II West Georgia. Once upon a time, Harrison was the top offensive lineman in junior college and was recruited by Texas in 2013. He played only seven games for Texas, never starting. He was suspended a few times, and eventually was dismissed from the team.

2. Harrison was out of football for two years, then surfaced at West Georgia for the 2017 season, where he was named a team captain. He was voted a first-team D-II All-American. The 6-foot-7, 295-pounder ran an eye-popping 4.9 seconds in the 40-yard dash at the NFL combine.

3. Several draft experts expected a team to use a late-round pick on Harrison. It didn't happen. General Manager John Dorsey was delighted to bring him to Berea. Harrison picked the Browns partly because of the opportunity at left tackle after the retirement of Thomas.

4. Wylie on Harrison: "He is probably the smoothest athlete of the 17 guys on the offensive line. He does it the way it should look with his feet and hands, bending his knees. ... He has to do it mentally. He has to learn to play like a pro, learn how to see the defense."

5. Harrison did play a fair amount at left tackle. He physically overwhelmed defensive linemen at West Georgia. Wylie talked about how Thomas would look to the right side of the line -- opposite from his left tackle position -- to find what the coach called "triggers" in the defense. He said something that happens on the right side will "trigger" or indicate a pass rush on the left side.

6. "Preseason games will be big (for Harrison)," said Wylie. "He's going to face some real guys there...you gotta play to get better."

7. The Browns not only are looking for a left tackle, they want to find some young linemen to develop. Harrison could fit into that category.

THE FORMER PHENOM

1. Greg Robinson was the No. 2 pick in the 2014 draft. Like Shon Coleman, he played at Auburn. In three years with the Rams, he started 42 games. But he was a major disappointment at left tackle. He was traded to Detroit for a sixth-round pick in 2017, and that didn't go well, either.

2. So why did the Browns grab Robinson? His contract is very modest, but I don't know the exact details. The Browns love his raw ability, they consider it to be "freakish." They think with some proper coaching, he can still develop into a solid NFL player. He is 6-foot-5, 337 pounds and only 25.

3. The Browns cut Rod Johnson to add Robinson. Johnson was a sixth-round pick last season, but missed all year with a knee injury. Johnson was claimed on waivers by Houston.

4. The Browns consider Robinson a "no-risk" pickup. If nothing else, he has started 48 games. He brings some experience to left tackle. The Browns believe he has far more physical talent than Johnson.